Lower Brule, SD truck route planning & crash data
Plan safer truck routes in Lower Brule: commercial truck and garbage truck crashes in Lower Brule and Lyman County, dangerous roads, seasonality and route safety data for fleets. Patterns use Lyman County numbers.
Where fatal truck crashes happened
Risk scorecard
Key findings
Snapshot
Crashes by month
Garbage trucks vs all trucks
0 of 139 truck crashes since 2015.
Deadliest roads
How Lyman County compares with South Dakota
Lyman County against South Dakota and the US, 2015–2025 (years with complete crash reporting). Per-resident rates make big and small places comparable.
Where Lyman County stands out
Full comparison
| Measure (2015–2025) | Lyman County | South Dakota | United States | vs state |
|---|---|---|---|---|
| Crashes per 100k residents / yr | 320.1 | 42.0 | 49.7 | 7.6× the state |
| Deaths per 100 crashes | 5.3 | 5.2 | 3.4 | same |
| Injuries per crash | 0.12 | 0.13 | 0.49 | 8% below the state |
| Garbage-truck share | 0.0% | 1.6% | 2.3% | 100% below the state |
| On snow, slush or ice | 40.5% | 28.6% | 6.2% | 1.4× the state |
| Morning rush (6–10 am) | 19.1% | 22.2% | 23.7% | 14% below the state |
| In rain, sleet or snow | 24.4% | 17.5% | 13.8% | 1.4× the state |
| Winter months (Nov–Mar) | 55.7% | 48.8% | 41.9% | 1.1× the state |
| After dark | 35.1% | 22.8% | 24.8% | 1.5× the state |
Lyman County sits below South Dakota on injuries per crash, garbage-truck share and morning rush (6–10 am). Where it is higher: crashes per 100k residents / yr, on snow, slush or ice and in rain, sleet or snow.
Lyman County at a glance: January the month with the most truck crashes: 20.1% of the year's total.
Overview
Police reported 139 crashes involving commercial trucks in Lyman County since 2015: 25 people were injured and 14 were killed.
That averages about one truck crash every 31 days in fully reported years.
Lower Brule had 1 reported truck crash since 2015, too few for reliable patterns, so the charts and findings on this page use Lyman County numbers.
When crashes happen
January has the most truck crashes, 20.1% of the yearly total, while February has the fewest (3.6%).
The five winter months (November to March) hold 55.7% of truck crashes, against 48.8% across South Dakota.
The busiest hour is 8–9 am, with 7.9% of truck crashes.
Road surface: 40.5% of truck crashes were on snow, slush or ice (South Dakota: 28.6%).
Where crashes happen
Fatal large-truck crashes within 10 miles of Lower Brule since 2015 were spread across roads: CR-BIA Rt 4 (1).
Garbage & waste trucks
Since 2015, no garbage-truck crashes were reported for Lyman County.
Route planning tips for Lower Brule fleets
- Plan January schedules with more margin; it is the worst month for truck crashes in Lyman County.
- 40.5% of truck crashes were on snow, slush or ice, above South Dakota; plan winter equipment checks before the season.
- Paste your stops into the free Route Planner to see the risk score, safer alternatives and low bridges.
About the data
Crash counts come from the FMCSA crash file (police-reported crashes involving trucks over 10,000 lb); fatal-crash locations come from NHTSA FARS. Text on this page states only what these numbers show.
Truck crashes by year: all trucks vs garbage trucks
Seasonality: when trucks crash in Lyman County
By hour of day
Most dangerous roads for trucks
| Road | Fatal truck crashes since 2015 (within 10 miles) |
|---|---|
| CR-BIA Rt 4 | 1 |
Roads named most in all truck crash reports
| Road | Truck crashes since 2015 (Lyman County) |
|---|---|
| I-90 | 89 |
| Sd Hwy 47 | 22 |
| US-83 | 10 |
| Sd Hwy 248 | 3 |
| 0.169 Miles W Of 324 Ave | 2 |
| Ave | 2 |
| Sd Hwy 273 | 2 |
| US-183 | 2 |
Lower Brule at a glance
| Land area | 0.4 sq mi |
| Median household income (ZIP 57548) | $35,750 |
| Median home value (ZIP 57548) | $40,080 |
Historical data: truck crashes in Lyman County since the 1990s
Combines the FMCSA crash file (all reported truck crashes, real coverage from about 1990) with NHTSA FARS (fatal crashes involving a large truck, 1982–2024).
| Decade | Truck crashes / yr | Change | Fatal crashes / yr (FARS) |
|---|---|---|---|
| 1990s | 7 | — | 0.4 |
| 2000s | 8 | +19% | 0.2 |
| 2010s | 9 | +18% | 0.3 |
| 2020s | 14 | +47% | 0.4 |
Reported truck crashes averaged 7 a year in the 1990s and 14 a year in the 2020s. Reporting practices changed over time, so part of any change can come from reporting. Fatal large-truck crashes: 0.5 a year in 2016–19, 0.4 a year in 2020–24.
Nearby places
Questions fleets ask about Lower Brule
How many truck accidents are there in Lower Brule?
Lyman County has had 139 reported truck crashes since 2015, injuring 25 people and killing 14.
What is the worst month for truck crashes in Lower Brule?
January has the most truck crashes in Lyman County, 20.1% of the yearly total.
How many garbage truck crashes are there in Lower Brule?
Since 2015, Lyman County has reported 0 garbage-truck crashes, or 0.0% of its truck crashes.
How does Lower Brule compare with South Dakota for truck crashes?
Lyman County records 320.1 truck crashes per 100,000 residents a year, against 42.0 across South Dakota.
How do I plan a garbage truck route in Lower Brule?
The free Route Planner takes your stops and returns a route risk score, safer alternatives and low-bridge warnings.
2026 is a partial year. Updated October 2026.